One cool thing you can do is expand the monastery mini-map, while you’re still roaming around. This helps you to locate where you are and places/people of interest, without needing to exit the screen to view the full map.

We’ve known that Raphael can be recruited if you’re not teaching the Golden Deer. His exact requirements are a high Frc stat and Cuirassier skill level. I’m clueless with French, but apparently these are Strength and Heavy Armor (via Azz).

If you don’t meet the requirements for now, there is a fourth option “Mission Assistance”, which lets you borrow the student for one month only (via FuranSuwa). However, like recruiting, we don’t know what the limitations are.

At some point, they hover near the amiibo Gazebo, aka the Pavillon amiibo in French. Sadly, they didn’t show it off. But according to the developers, if you scan in Fire Emblem amiibo, you can unlock classic player phase music for the auxiliary (optional) maps (via Cysx).